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Samsung 840 128gb SSD Issues

Hello!

I recently took a dive and built my own desktop PC, my specs include..

AsRock z77 Pro4-M MOBO
Quadcore i5-3570k OC to 4.4Ghz
Crusical 8 GB d3 1600Mhz ram
Samsung 840 120Gb SSD for OS
2 TB WD Barricuda HDD
ThermalTake 600w PSU.
Nvidia GTX 570OC
Fresh Win 7 install

Every so often when I completely power down my rig and power it back up my main OS SSD just disappears.. Completely. It will take several resets for it to finally show up in my boot menu. Sometimes disconnecting the drive then reconnecting it will remedy the issue. I'm just getting so frustrated with this and I'm really not quite sure what to do. From some reading it appears that the MBR (masterboot record) is at fault. But I cannot find out how to fix the MBR.

Any help would be much appreciated
13 answers Last reply Best Answer
More about samsung 840 128gb ssd issues
  1. Even if you have a bad MBR, your ssd should ALWAYS show during post. Does it ever disappear from there or just after that when it's supposed to boot ?
  2. royalcrown said:
    Even if you have a bad MBR, your ssd should ALWAYS show during post. Does it ever disappear from there or just after that when it's supposed to boot ?


    When I go to start my computer back up, a screen saying "Please select boot device". I do CTRL-ALT-DEL to reboot and go into my boot device menus and it is not there.. My other drives show up but my SSD does not. Interestingly enough this does not happen when I put my computer to sleep.
  3. If it's disappearing on POST, it is not your MBR. It could be a few things from your bios is corrupted, needs flashing, a bad sata port on mobo, bad cable or bad SSD. I think the first thing I would personally do is clear the CMOS, then reset it to defaults in setup.

    If it is still disappearing after that I'd check my cable and or switch cables.

    When it DOES show up download and run samsung drive magician from their site.

    After that, see if there is a bios update after that then try updating the bios.

    RMA the SSD and or MOBO if all else fails.

    Hope this helps you and it's just a bios that needs reset.
  4. Best answer
    Try disabling all UEFI boot devices and make the SSD the primary legacy boot device.
  5. BwwwJ1st said:
    Try disabling all UEFI boot devices and make the SSD the primary legacy boot device.


    I don't disagree with you, he should try it. Normally that drive is 100 percent UEFI compatible however. This will be an interesting thread (unfortunately though).
  6. I have an Asrock MoBo and a Samsung 840 (non pro). I had big problems booting to windows from the 840. Sometimes it just worked other times I had to hit an FN key for a boot menu and pick the 840 manually. Once I removed all UEFI boot devices, and made the 840 as the primary legacy boot device, I boot off the 840 no issues each and every time. My previous HP MoBo was the same way with my Samsung 830. I can't figure out why I would have to disable UEFI boot devices to fix the issue but it works. I hope it helps the OP.
  7. BwwwJ1st said:
    I have an Asrock MoBo and a Samsung 840 (non pro). I had big problems booting to windows from the 840. Sometimes it just worked other times I had to hit an FN key for a boot menu and pick the 840 manually. Once I removed all UEFI boot devices, and made the 840 as the primary legacy boot device, I boot off the 840 no issues each and every time. My previous HP MoBo was the same way with my Samsung 830. I can't figure out why I would have to disable UEFI boot devices to fix the issue but it works. I hope it helps the OP.


    Weird..mine doesent give probs just FYI, must be something with the mix.
  8. Which OS is installed? Windows 7 or Windows 8?
  9. JohnnyLucky said:
    Which OS is installed? Windows 7 or Windows 8?


    If you mean me the Windows 7.
  10. Windows 7 64bit Pro on an ASRock Fatal1ty X79 Professional LGA 2011 Intel X79 Mobo and Samsung 840 (non pro) 500GB.

    Previous build, HP 1280T IPIWB-PB (Pittsburgh) MoBo and a Samsung 830 128GB. Having to disable UEFI boot devices to solve boot problems, could it be an x79 chipset thing or something I'm doing wrong?
  11. OK! We can rule out Windows 8. There have been some reports suggesting Windows 8 does not always play nice with ssd's.

    Next up is the motherboard's system BIOS. Is ACHI mode enabled? Does the motherboard BIOS indicate the ssd is the primary boot drive?
  12. BwwwJ1st said:
    Windows 7 64bit Pro on an ASRock Fatal1ty X79 Professional LGA 2011 Intel X79 Mobo and Samsung 840 (non pro) 500GB.

    Previous build, HP 1280T IPIWB-PB (Pittsburgh) MoBo and a Samsung 830 128GB. Having to disable UEFI boot devices to solve boot problems, could it be an x79 chipset thing or something I'm doing wrong?


    All I know is my UEFI boots okay, maybe it's a bios bug specific to Asrock ?
  13. Jthorr said:
    Hello!

    I recently took a dive and built my own desktop PC, my specs include..

    AsRock z77 Pro4-M MOBO
    Quadcore i5-3570k OC to 4.4Ghz
    Crusical 8 GB d3 1600Mhz ram
    Samsung 840 120Gb SSD for OS
    2 TB WD Barricuda HDD
    ThermalTake 600w PSU.
    Nvidia GTX 570OC
    Fresh Win 7 install

    Every so often when I completely power down my rig and power it back up my main OS SSD just disappears.. Completely. It will take several resets for it to finally show up in my boot menu. Sometimes disconnecting the drive then reconnecting it will remedy the issue. I'm just getting so frustrated with this and I'm really not quite sure what to do. From some reading it appears that the MBR (masterboot record) is at fault. But I cannot find out how to fix the MBR.

    Any help would be much appreciated


    Did you find a fix to your problem?
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